KR940011551B1 - Tableware washing machine - Google Patents

Abstract

No content.

Description

dish washer

(1) The rotary nozzle spraying method has already been described as being washed by spraying the washing water from the lower part nozzle arm 11 and the upper part spray nozzle arm 30 installed above and below the dish to be cleaned as shown in FIG. In addition, it has been described that the injection from the lower part sand nozzle arm 11 has a greater influence on the cleaning result than the injection from the upper part.

Here, the dish rack 35 has a square shape of 50 cm × 50 cm, and when the total length of the lower part nozzle arm 11 is about 50 cm, as shown in FIG. 6, the lower part nozzle nozzle 11 is the table rack 35. Since it rotates below about 12 cm, the jetting water from the nozzle injection holes 13 provided at both ends of the lower part nozzle arm 11 does not reach the tableware placed at the four corners of the dish rack 35, and washing is not performed sufficiently. Will not. As a result, in Fig. 6, the dishes placed in the range of the oblique portion become insufficient washing. In order to avoid this, as shown in Fig. 7, the lower part nozzle arm 11 is lengthened to about 70 cm, and when the nozzle injection ports 13 at both ends of the lower part nozzle nozzle 11 are installed, the tableware of the four corners of the table rack 35 is cut. Also, the spraying is applied to every corner, but in this case, unnecessary spraying is performed on the oblique portion on the outside of the dish rack 35 at this time. Since the area of this oblique line part is about 50% of the area of the dish rack 35, it makes uselessly spraying about 50% of the area anyway, and the output of the pump requires the pump which increased by 50%, and the 70cm of In order to rotate the lower part nozzle arm 11, the washing machine main body is at least 80 cm in size, which becomes large and impractical. Therefore, as shown in Fig. 6, the lower portion of the nozzle arm 11 has a length of about 50 cm, and the four main corners of the tableware placed on the square table rack 35 having a size of 50 cm x 50 cm become inadequately washed. It is common to choose 60cm, and to choose a pump that can be solved with a small pump.

② In FIG. 5, when the pressure of the jetting water flow from the lower part nozzle arm 11 is increased, the amount of injection and the impact of the injection are increased, and as a result, the cleaning power is increased, but the upper part injection nozzle arm 30 is the lower part nozzle arm ( There is no reason to rotate in synchronism with 11), so light utensils will be blown or rattled.

In order to eliminate the drawbacks of these (1) and (2), as shown in FIG. 8, a fixed nozzle injection method for disposing a plurality of fixed nozzles above and below the tableware and spraying the washing water 2 at the same time has been put to practical use. have. In this method, even when the spray of the washing water 2 reaches the corners at all four corners and the spraying from the top and bottom is always balanced, the dishwashing is less, but it is sprayed entirely from a plurality of nozzles. Since the pump is enlarged and the structure is complicated by the arrangement of a plurality of nozzles in the upper and lower parts, the product price becomes high and it is a problem to spread.

(3) In the rotary nozzle injection equation, FIG. 9 shows the injection when each of the outer circumferential ejection nozzle 61 and the inner circumferential ejection nozzle 63 disposed on the rotating nozzle arm 65 with respect to the table rack 60 is sprayed while rotating. The area of the range of the outer periphery ejection nozzle 61 is the range of the oblique part 62, and the inner periphery ejection nozzle 63 is the area of the range which sprays with respect to the range of the oblique part 64. As shown in FIG. therefore

The area of the diagonal portion 62 is 25 ² π-20 ² π = 0.696 m ² . … … … … … … … … A

The area of the diagonal portion 63 is 10 ² π-5 ² π = 0.235 m ² . … … … … … … … … … B

A: B = 2.96: 1

It becomes

As a result of the calculation, when the nozzles 61 and 63 each had a width of 5 cm, the area covered by the outer circumferential ejection nozzle 61 and the area covered by the inner circumferential ejection nozzle 63 were about three times. In the case where the amount of sprayed water per nozzle is the same, for example, the washing power is determined by the amount of sprayed water per unit area, and therefore, it can be proved in principle that the outer circumferential portion has a weaker washing force than the inner circumferential portion. Further, as described in the preceding paragraph, the outer circumferential ejection nozzle 61 of the outer circumference portion must also spray on the dishes placed on the corner portions 66 of the four corners of the dish rack 60, so that the four corners of the corner portions 66 are insufficiently cleaned. At the same time, the tableware placed on the outer circumferential portion of the oblique portion 62 also has the principle drawback that the cleaning power is weaker than the inner circumferential portion. In order to eliminate this drawback, it is supplemented by adding the injection nozzle 67 for injection of the outer peripheral part by concentrating on the outer peripheral part of the rotary nozzle arm 65, but it is not a fundamental improvement.

In the above, the rotating nozzle spraying formula which has been widely provided in practical use has been described, and the defects and the like of the rotating nozzle spraying formula are also mentioned. In addition, the four-rotor nozzle spraying method according to the embodiment of the present invention described above compensates for the drawbacks of the rotating nozzle spraying formula and explains that the structure and the cleaning force far exceed the conventional rotary nozzle spraying formula. do.

The invention according to claim 1 is provided with a plurality of washing branch pipes in a washing tank, each of which comprises a rotating nozzle arm having a plurality of nozzle nozzles in a substantially same plane, and is freely attached to the center of the washing tank. A rinsing water pipe was disposed and one rinsing nozzle arm having a plurality of rinsing water spray nozzles was freely connected to the rinsing water pipe.

According to the invention of claim 2, the horizontal surface shape of the washing tank is formed in the forward direction, and the washing tank is divided into approximately four centers each having four washing branches.

According to the invention of claim 1, there are a plurality of rotating nozzle arms for washing in the same plane, whereby the washing ability over the entire area of the washing tank is equalized throughout and the structure is more complicated than that of the spherical type. However, the washing nozzle structure including each center of rotation is realized by a very simplified structure, and by installing a nozzle shaft to be rinsed in the space of the center, it can be made a simple structure that does not depend on the complex double side structure, the rotating nozzle At the same time as the plastic molding of the arm, the overall structure can realize a high-performance dishwasher at a lower cost than the spherical type.

In addition, according to the invention of claim 2, the most rational arrangement for the rectangular washing tank currently implemented can be performed.

A first embodiment of the present invention will be described with reference to FIGS. 10 to 15. FIG. 10 is a structural diagram showing a main cross section of the four-rotor nozzle washing machine according to the present embodiment, and FIG. 11 is a perspective view of an essential part.

In these drawings, the washing water 102 is clogged in the washing tank 101. The washing water 102 reaches the washing pump 103 via the inlet 105 through a plurality of small holes 106 drilled in the strainer 107, and is pressurized by the washing pump 103 to be washed again. The discharge conduit 109 is set so as to extend from the four-way branch pipe 151 to the four rising pipes 152 and 152 '.

The end 153 of these four risers 152 and 152 'has a blind cap, but just below the blind cap, three to four holes 154 are drilled in the side of the riser tubes 152 and 152', and the washing water ( 102 is set to flow into the four rotary nozzle arms 111 from this hole 154.

In addition, two nozzle ejection openings 113 are formed at the outer circumferential portion of the rotary nozzle arm 111, and one nozzle ejection opening 113 'is formed near the inner circumferential portion, and the washing water 102 has respective nozzle ejection openings 113, 113. Is jetted to separate the jet streams into the dishes 136 and 137 ejected from "

Here, the washing water 102 pressurized by the washing pump 103 is branched again from the upper portion of the four-way branch pipe 151 and flows out into the upper spray washing nozzle by the upper washing conduit 110, and spray washing from the upper portion. As described above, in the case of the dish washing machine, since the lower washing spray plays an important role in the cleaning result compared to the upper washing spray, the structure of the upper washing nozzle will be omitted for further explanation.

Next, in FIG. 13, one of the two nozzle ejection openings 113 in the outer circumference is self-rotating so that the nozzle ejection opening is set to eject at an inclination of about 30 degrees from immediately above and at a rate of two to three times per second. It is supposed to rotate.

When the rotary nozzle arm 111 shown in FIG. 13 is viewed from above the dish rack 135, as shown in FIG. 12, even if the four rotary nozzle arms 111 rotate, they do not collide with each other on the same plane. It is arrange | positioned so that the area of the dish rack 135 may be divided into four.

That is, the four rotating nozzle arms 111 are arrange | positioned in the same plane, respectively, and each rotating nozzle arm 111 is provided in the substantially center which divided | segmented the table rack 135 into four planes.

In the case of the conventional rotary nozzle spraying described in FIG. 1 and FIG. 2, the washing water 2 does not sufficiently reach the dish 36 placed at the corner of the dish rack 35 as shown in FIG. Although it becomes insufficient, according to this embodiment, the area which becomes insufficient washing of the four corners of the dish rack 135 is extremely small, as shown to the oblique part 160 in FIG. 12, and the outer peripheral part of the rotating nozzle arm 111 is shown. Since the washing water 102 sprayed from the exposure nozzle 113 is sprayed onto the dishes 136 and 137 while being opened in a fan shape, the washing water 102 does not become widespread and becomes poor in washing.

This fact also applies to the oblique portion 162. That is, the oblique portion 162 is covered by four nozzle ejection portions 113 of the two rotating nozzle arms 111, and the oblique portion 163 of the central portion has four rotating nozzle ejections 113 and 8 Since it is covered by the dog, all the inner area of the dish rack 135 can be spread widely by spraying sufficient washing water 102.

This point will be described in more detail with reference to FIGS. 14 and 15.

First, the dish rack 135 is 50 cm x 50 cm in size, and four rotary nozzle arms 111 are rotated on the same plane below about 12 cm of the dish rack 135, and the nozzle outlet 113 of the outer peripheral part is moved. When two nozzle ejection openings 113 'are provided at one inner periphery and the ejection angle of the washing water 102 from each nozzle ejection opening 113 and 113' is approximately 30 degrees, the ejection cross section is shown in FIG. As seen from above the dish rack 135, the range of the jetted water flow corresponding to the rack surface is as shown in FIG.

As a result, the total length of the four rotating nozzle arms 111 is 242 mm, the distance between the nozzle ejection port 113 is 225 mm, and the distance from the center of the nozzle ejection port 113 'is about 40 mm. As can be seen from the will be able to cover most of the 1/4 of the table rack (135).

By the way, the couple shown on the donut in FIG. 15 is covered by two nozzle ejection openings 113 on the outer circumference side, and the area of the part is 439 mm 2, so the share is 220 mm 2 per one. On the other hand, the area shown on the inner circumferential side is 176 mm 2, and this part is covered by one nozzle jet port 113 ′ on the inner circumferential side.

Therefore, the ratio of the sharing area per one of the nozzle ejection openings 113 on the outer circumferential side to the one sharing area of the nozzle ejection openings 113 'on the inner circumferential side is 1.25: 1.0, and the side of the nozzle ejection opening 113 on the outer circumferential side 25 % It shall cover a large area.

However, the difference is a small difference compared to the conventional rotary nozzle injection method, which is practically practically impaired, and means that almost uniform spray cleaning is performed to the outer peripheral part and the inner peripheral part.

According to the jetting formula from the above result, uniform jet washing is generally obtained over the whole of the dish rack 135, and the four corners of the dish rack become inadequate washing | cleaning conventionally.

However, the lower rotating nozzle arm 11 shown in FIGS. 1 and 2 has a total length of about 50 cm, and the four rotating nozzle arms 111 of this embodiment have a total length of about 24 cm and a length of 1/2. have. In order to maintain the mechanical strength, the nozzle arm 11 of 50 cm must be made of a metal casting or a press product. However, since the rotary nozzle arm 111 of the present embodiment is short and small, the strength of the nozzle arm 11 of the present embodiment is sufficiently reduced by the molded product of plastic. It is sustainable. In the case of plastic, the bearing portion 115 of the rotating nozzle arm 111 rotates by fitting the upper portion of the rising pipe 152 as the rotating shaft in FIG. 13, but the bearing portion 115 portion also rotates. Since it is made of plastic, when the plastic bearing is rotated around the metal as the central axis when it is rotated by fitting to the bearing portion 115, the durable rotation can be continued without using a special rotating bush.

In addition, since the washing water 102 is sprayed from the nozzle outlets 113 and 113 ', the rotating nozzle arm 111 receives a downward reaction force and is always in contact with the sliding stopper 171 and the sliding part 170 of the lower surface of the rotating nozzle arm 111. In this case, it is necessary to insert a bush made of plastic because the friction force is reduced in the case of metal and metal, but in this embodiment, the entire rotary nozzle arm 111 is a plastic molded product. It doesn't need a bush.

Therefore, according to the present embodiment, since the rotary nozzle arm 111 is solved in a small size, it is to maintain the mechanical strength sufficiently as a plastic molded product, and is equivalent to the one in which the rotary bearing and the thrust bearing are integrally formed. The rotation can be rotated lightly while maintaining durability, and can be realized at a very low cost.

Moreover, in the conventional machine shown in FIG. 1 and FIG. 2, it becomes the double conduit system comprised by the introduction pipe | tube 14 which rinses concentrically inside the washing water pipe 9 as mentioned above, and each bearing part The bearings require bearing bushes to reduce friction and prevent wear, and the bearing clearances must be kept small in order to prevent unnecessary drainage from the bearings.

As a result, the structure becomes complicated, and in the case of attaching and detaching the nozzle arm 11, the rinsing nozzle arm 18 must be detached and then performed.

Advantageously, according to this embodiment, as can be seen in FIG. 13, the four rotary nozzle arms 111 are formed by integrally forming both the nozzle outlets 113 and 113 ', the bearing part 115, and the thrust bearing part 170. It is a plastic part, and the riser tube 152 which becomes this rotation center axis | shaft and guides inflow of wash water 102 can also be implement | achieved with the simple structure which integrates with the bearing part 115. Similarly, as can be seen from FIG. 13, it is only necessary to put it directly on the top and insert it into the lift pipe 115, so that the inspection and cleaning of the rotary nozzle arm 111 are also easy.

In addition, when the pressure washer washing machine is considered, the rotary nozzle arm and the rinsing arm are necessarily composed of separate channels and parts. Here, conventionally, the nozzle arm 11 and the rinsing arm 18 are constructed coaxially with the rotation center in the center of the washing machine as shown in FIG. 1 and FIG. For this reason, a double conduit is required.

Advantages According to the present embodiment, the four rotating nozzle arms 111 are located at four locations maintained at a constant distance from the center of the washing machine as shown in FIG. 15, and the center portion 172 of FIG. 15 is shown in FIG. As can be seen from the above, except that the four-way branch pipe 151 is at the bottom of the washing tank 101, the upper portion thereof becomes a space and is empty.

Since the empty space is used as the center of rotation of the rinsing nozzle arm 118, the upright rinsing conduit 114 of FIG. 10 can be realized with a very simple structure.

Next, with reference to Figs. 16 and 17, a second embodiment of the present invention will be described.

The same parts as in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment relates to a half-sized rack washing machine in which the flat shape of the dish rack is formed into a rectangular shape in which the ratio between the short side and the long side is 1: 2.

The conventional half-size rack washing machine was not feasible with one nozzle type.

In the form of spraying from the top and the bottom by the fixed nozzle, it is feasible, but there is a problem that the structure is extremely complicated.

Thus, the half-sized rack washing machine of this embodiment is exactly half as compared with that shown in FIG.

A specific example thereof will be described with reference to FIG. First, the dish rack 201 has a planar shape of 25 × 50 cm, and is half the shape of the dish rack 135 shown in the first embodiment.

Such a dish rack 201 is widely used as a half-size rack separately from a full-size rack of 25 x 50 cm. Two rotary nozzle arms 111 are disposed below the dish rack 201, and the rotary nozzle arms 111 and two rotary nozzle arms 211 of the same shape are arranged on the upper part of the dish rack 201. Is placed on.

The lower two rotary nozzle arms 111 are distributed to each rotary nozzle arm 111 by a branch pipe 203, and the vertical rotary pipe 204 is passed to the upper rotary nozzle arm 211. The washing bath is sent out from the horizontal branch pipe 205. Reference numeral 209 denotes a bath of the washing bath, and the washing bath stored therein passes through the strainer 207 to the inlet 208 of the pump 202 and is pressurized by the pump 202 to raise the riser 210. ), The washing bath is spouted from the rotating nozzle arms 111, 211 which are guided to the center of the washing tank and are provided two up and down through the branch pipes 203, 204 and 205 in the washing tank.

Next, 206 is a casing for preventing the washing amount from scattering to the outside, and the casing 206 is provided with a door for dispensing the dish rack 201 (not shown).

By doing in this way, the tableware filled in the dish pack 135 which has a flat part of 25 * 50cm can be sprayed on a tableware by spray washing from up and down, and the casing 206 can be sprayed effectively. ) Can be almost half the size of the full-size rack dishwasher shown in the first embodiment.

Use of such a half-size dishwasher includes washing of glass cups. Glass cups should be handled in a service area close to the seating area without transporting them to a dedicated washing station.However, if the size of the dishwasher reaches half the size of the dishwasher in a full-size rack, It can be placed and the glass or cups can be cleaned efficiently and efficiently without moving to the kitchen separately from ordinary tableware.

In the invention of claim (1), a plurality of washing branch pipes are disposed in the washing tank, and a rotating nozzle arm having a plurality of nozzle injection ports is attached to each of these washing branch pipes in almost the same plane so that they can be attached freely for rotation. The nozzle arms are provided in plural in the same plane, so that the washing ability of the washing tank with respect to the entire area can be equalized throughout, and the invention of claim (2) forms a horizontal shape of the washing tank in a square shape, Since four washing tanks were arranged at approximately the center of each of the four washing tanks, the most rational arrangement can be made with respect to the rectangular washing tank that is currently implemented, and the invention of claim 7 further provides a plurality of washing branch pipes in the washing tank. Rotating nozzle arms having a plurality of nozzle nozzles in each of these washing branch pipes are located in approximately the same plane. Turn freely attached, and the rinsing water pipe is disposed in the center of the washing tank, and one rinsing nozzle arm having a plurality of rinsing water injection nozzles is freely connected to the rinsing water pipe, so that each rotation center is included. The washing nozzle structure is realized by a very simplified structure, and by installing a nozzle shaft to be rinsed in the center space, the structure can be made simple by a complex double-axis structure, and the plastic molding of the rotating nozzle arm is carried out at the same time. In the structure, a dishwasher having a higher performance can be realized at a lower cost than a spherical type, and moreover, the invention of claim (3) forms a horizontal shape of the washing tank in a rectangular shape, and has two washing branch pipes. We installed in each, and we can install in service area where installation space is small , It is possible to clean the glass or the like in the vicinity of the seats.

1 is a vertical side view showing an example of a conventional dish washing machine.

2 is a perspective view of a part cut away.

3 is a front view in which a part of the case assembled as a set is cut away.

4 is a front view showing the relationship between the lower part sand nozzle arm and the tableware.

5 is a perspective view showing the relationship between the lower partial nozzle arm and the tableware and the upper injection nozzle arm.

6 is a plan view showing the relationship between the rack and the lower part nozzle arm.

7 is a plan view showing another relationship between the rack and the lower part sand nozzle arm.

8 is a perspective view of a fixed nozzle injection method.

9 is a plan view showing the injection range between the inner circumference and the outer circumference.

10 is a longitudinal side view showing one embodiment of the present invention.

11 is a perspective view of a part thereof.

12 is a plan view thereof.

13 is an exploded perspective view of a portion of the rotating nozzle arm.

14 is a longitudinal side view showing an injection state;

Fig. 15 is a plan view showing a spraying region by one rotating nozzle arm.

16 is a plan view of a second embodiment of the present invention.

17 is a perspective view showing a second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

101: washing tank 111: rotating nozzle arm

113,113 ': nozzle nozzle 114: rinsing water pipe

151 washing branch

The present invention relates to a dishwasher suitable for use for business purposes.

About 90% of the box-type dishwashers currently used for business use the rotary nozzle spraying formula manufactured in the United States more than 50 years ago.

Representative structural examples of such a "rotary nozzle injection equation" will be described with reference to FIGS. 1 and 2. First, (1) is a washing tank, one side is a square tank of approximately 60 cm, and the washing water 2 which maintains a constant water level inside, and maintains a constant washing density is condensed. The flange 20 is formed in the upper edge of this washing tank 1. (3) is a washing pump which is driven by the washing pump motor (4). The suction port 5 is connected to the bottom of the washing tank 1, and the upper portion of the suction port 5 is provided with a constriction (food waste) of a predetermined size or more contained in the washing water 2 sucked from the suction port 5. A strainer 7 having a plurality of passage holes 6 is provided so as not to pass. The washing water 2 pressurized by the washing pump 3 is separated and introduced into the lower conduit 9 and the upper conduit 10 in the washing tank 1 from the discharge port 8 combined with the washing tank 1. (11) is a lower washing nozzle arm, which has a total length of about 50 cm, and the nozzle ejection openings 12 and the nozzle ejection openings 13 and 13 'near the outer periphery are combined to provide 6 to 8 ejection openings. The pipe 14, which is located in the center of the lower conduit 9 and forms a double conduit, is rotatably held by the bearing 15 as the rotation axis.

The upper end of the pipe 14 is blocked by a plug stopper 15a, but several opening holes 16 are opened in the middle. 18 is rotatably fitted to the pipe 14 by the bearing portion 17 as a rinsing nozzle arm, 6 to 10 rinsing nozzle tips 19 are planted in the rinsing nozzle arm 18, have.

Reference numeral 21 denotes a rinsing pump, which is driven by a rinsing pump motor 22 and collects the rinsing water 26 collected in the rinsing tank 25 from the suction port 23. It is suctioned and pressurized by the discharge port 24 and introduced into the lower rinsing conduit 28 and the upper rinsing conduit 29 through the rinsing conduit 27 in the washing tank 1.

The rinsing water 26 pressurized by the rinsing pump 21 is introduced into the lower rinsing conduit 28 via the rinsing conduit 27, while a portion thereof passes through the upper rinsing conduit 29 and the upper The rinsing water 26 is jetted from the rinsing nozzle tip 32 installed at four corners of the rinsing nozzle tip 32.

The washing water (2) pressurized by the washing pump (3) is introduced into the lower washing nozzle (11) through the lower conduit (9), but a part of the upper spray nozzle (10) installed at the upper portion through the upper washing conduit (10). 30 is also introduced, and is also ejected from the upper nozzle injection port (31).

35 is a dish rack, which has a net basket structure so as not to interfere with the spraying of the washing water 2 from below, and has a suitable partition so that the glass 36 of the tableware and the bowl 37 of the tableware do not collide with each other. At the same time has been studied to maintain a posture that is easy to wash. The size of this dish rack 35 is 50 cm x 50 cm, and there are various things according to uses, such as a glass, a bowl, and a dish.

Reference numeral 41 is a hood for preventing the washing water 2 from scattering out during washing, and lifting the hood 41 in and out of the dish rack 35 containing the dishes 36 and 37. As the mount, 42 is a washing pump 3, a rinsing pump 21, a rinsing water tank 25, and a control box (not shown), and is supported by four legs 43. As shown in FIG. The washing water (2) pressurized by the washing pump (3) enters the washing nozzle arm (11) through the lower conduit (9), and is ejected from the nozzle outlets (12, 13) and directed downward to the dishes (36, 37). Although the sprayed water (2) is ejected from the outer periphery, the nozzle ejections (13, 13 ') of the outer circumference are about horizontally sprayed from the other nozzles vertically to obtain the driving force rotating with the reaction force ejecting the washing nozzle arm (11). The water is inclined at about 30 ° and ejected. As a result, the washing water 2 is ejected while rotating at a speed of 1 to 2 times per second.

In the same principle, the upper spray nozzle arm 30 also rotates to eject the washing bath. In addition, even when the rinsing water 26 pressurized by the rinsing pump 21 reaches the rinsing nozzle arm 18 and is ejected from the rinsing nozzle tip 19, the nozzle tip 19 of the outer circumferential portion is moved in the vertical direction. The rotational driving force is applied to the rinsing nozzle arm 18 by inclining in the horizontal direction at about 30 ° and ejecting the rinsing bath while rotating at a speed of about once per second.

The dishwasher of such a structure is for business use, and the time required per one time is very different from that of a domestic dishwasher, and the washing and rinsing process must be performed automatically in about one minute.

3 shows the auxiliary tables 50 and 51 on the left and right sides of the washing machine in order to efficiently clean the dish, and fills the dish rack 35 'with the dirty table in the auxiliary table 50, Open the hood 41 to slide it into the center of the washer and pull down the hood 41. The hood 41 lowers the hood in conjunction with the starter switch of the washing machine, so that the washing pump motor 4 is operated first, and the washing pump 3 sucks the washing water 2 stuck to the washing tank 1. And the washing water 2 is discharged to the lower washing nozzle arm 11 through the discharge pipe 7, and the washing water 2 is ejected by the nozzle ejection ports 12 and 13. While rotating, the washing water 2 is ejected to impart water shock to the dishes 36 and 37. On the other hand, the washing water 2 pressurized by the washing pump 3 simultaneously passes through the upper washing conduit 10 to the upper washing nozzle arm 30 and is ejected from the nozzle outlet 31 (lower washing nozzle arm 11). ), Imparting impulse water flow of the washing water 2 from the upper sides of the dishes 36 and 37. The washing pump 3 is operated for about 45 seconds and stopped.

After that, the rinsing pump motor 22 automatically starts at intervals of several seconds. The rinsing pump 21 sucks the rinsing water 26 stored in the rinsing water tank 25 in advance, and reaches the rinsing nozzle arm 18 from the discharge port 24 via the conduit 28. As the rinsing nozzle arm 18 rotates, the rinsing water 26 is ejected from the nozzle tip 19, and the rinsing washing is automatically performed. At the same time, the rinsing water 26 pressurized by the rinsing pump 21 passes through the upper conduit 29 and is also ejected from the rinsing nozzle 32 disposed at the four corners of the upper side, so as to rinse from above. When the rinsing pump 21 is running for 10 to 15 seconds, when the rinsing is finished, a series of processes of washing → rinsing with a buzzer notifies the end or 1 automatically opens the hood 41 upwardly. Terminate the work of the synagogue. Thus, the total time of washing 45 seconds → resting water seconds → rinsing 12 seconds is about 1 minute. After a process is finished, the table 51 of FIG. 3 is withdrawn, and then the rack 41 'containing the previously contaminated tableware 36 and 37 is introduced into the washing machine to pull down the hood 41, The next process begins.

As described above, the contaminated dishes 36 and 37 have to be cleaned in only 45 seconds, so that the discharge flow rate and the discharge pressure of the washing pump 3 and the nozzle outlets 12 and 13 to the cleaning nozzle arm 11 are clean. The quantity, shape and so on become important factors. As can be seen in FIG. 1 and FIG. 2, the dirty dishes filled in the dish rack 35 are directed downward in the case of the glass 36 and obliquely downward in the case of the bowl 37. The partition rack or the pillar is provided in the dish rack 35 so that it may not overlap.

The dish rack 35 is located between the lower washing nozzle arm 11 and the upper washing nozzle arm 31, as can be seen from FIGS. 1 to 3, and the contaminated tableware is sprayed from below and upwards. In the case of being washed while receiving the jet stream from, the spray stream from the bottom in the case of the glass 36 or bowl 37 has a very large specific gravity in the cleaning result. Because the jet stream from below is sprayed to directly remove the dirt attached to the opening of the glass 36, and in the case of the bowl 37, the jet water flows directly to the inner dirt. This is because the washing water 2 ejected from the nozzle hole 31 of the c) is only washing the bottom of the glass 36 or the bottom of the bowl 37.

FIG. 3 is a view illustrating a case where the plate 52 is leaning on the table rack 35 at an angle upward and is washed. However, in the case of washing the plate 52, such a posture may be good. It can be said that the jetting water flow from the nozzle arm 30 greatly influences the dropping of the dirt and is more important than the jetting from the lower part nozzle arm 11. However, in the case of the dish 52, as in the case of the bowl 37, the container 35 is inclined downwardly to fill the rack 35, and the spray from the lower nozzle nozzle 11 is applied to the spray from the upper spray nozzle arm 30. It is said to be important in comparison. In any case, the dishwasher accomplishes a very important effect of spraying the washing water from the lower part nozzle arm (11) compared to the upper part nozzle nozzle (30). This can be seen from the fact that in the case of the simple type of commercial dishwasher, there is no upper injection nozzle arm and only the lower part nozzle arm is helpful. In the case of Japan, the shape of tableware is different from the European and American dishes, and because there are many bowls, air, bowls, lunch boxes, glasses, etc. It becomes.

As described at the outset, however, the United States has a 50-year history, and in Japan, the dishwasher having the structure described in FIGS. 1 to 3 accounts for 90% for business purposes. It is considered that the main reason is that the washing pump 3 is solved in a small size (1/2 horsepower to 1 horsepower).

However, such a "rotary nozzle injection formula" has a drawback described later, and the cleaning power does not necessarily satisfy the user.

Referring to the problem of the height of the dishwasher described so far, the height from the bottom surface of the dish rack 35 in Fig. 3 is maintained at about 80 cm in relation to the work table horizontally (Gumi In the product is 85-90 cm). Therefore, it is also necessary to keep the upper edge of the washing machine main body at 80 cm. As a representative average value within this 80 cm height, the washing tank 1 is about 30 cm, and the mount 42 is pump 3, pump 21 and rinsing. In order to store the tank 25, the mount 42 is about 40 cm and the leg 43 is about 10 cm, which is 80 cm in total.

In the washing tank 1, there are a nozzle arm 18 and a lower part nozzle arm 11 which are rinsed from the top, and the washing water 2 is confined beneath it. Thus, the lower part nozzle arm 11 is generally sprayed at about 12 cm below the dish rack 35, and the washing water 2 is ejected from the nozzle spouts 12 and 13 in the state where the washing water 2 spouts from the spout. (2) is a fan of about 30 degrees while hitting the table 36 through the table rack (35).

In FIG. 4, the gap between the dish rack 31 and the lower part nozzle arm 11 is generally 12 cm. However, if the distance between the dish rack 31 and the lower part nozzle nozzle 11 is increased to 20 cm, the jet stream flows into the fan rack up to the dish rack 35. As a result, the range covered by the jet stream increases, and the four corners of the dish rack 35 of FIG. 6 can be covered even if not enough. It is difficult to spin spray 11).

For example, if the distance is increased to about 20 cm, the jet stream flows in a fan shape and the area of the jet stream increases, but the force of the stream is always good when it is considered as the cleaning power from weakening in inverse proportion to the square of the distance. Can not say.

Claims (7)

A dish washing machine comprising a plurality of washing branch pipes disposed in a washing tank, and a rotating nozzle arm having a plurality of nozzle nozzles is attached to each of these washing branch pipes in approximately the same plane to be freely attached thereto. 2. The dishwasher according to claim 1, wherein the horizontal shape of the washing tank is formed in a square shape, and the washing tank is disposed at approximately the center of the four divided washing tanks with four washing branches. The dishwasher according to claim 1, wherein the horizontal shape of the washing tub is formed in the longitudinal direction, and the washing tub is divided into two roughly central portions each having two washing branches. 2. The dishwasher according to claim 1, wherein the number of nozzle injection holes on the outer circumferential side of the rotating nozzle arm is larger than the number of nozzle injection holes on the inner circumferential axis. The dish washing machine according to claim 1, wherein one of the nozzle nozzles on the outer circumferential side of the rotary nozzle arm is set to be inclined with respect to the rotational direction of the rotary nozzle arm. The dishwasher according to claim 1, wherein the rotary nozzle arm is formed of plastic. A plurality of washing branch pipes are disposed in the washing tank, and a rotating nozzle arm having a plurality of nozzle nozzles is placed in each of these washing branch pipes in approximately the same plane to be attached to a rotating free path, and a water pipe to be rinsed at the center part of the washing tank is disposed. And one rinsing nozzle arm having a plurality of rinsing water injection nozzles connected to the rinsing water pipe in a rotational motion freely.